Dr Cashel O'brien, DO - Medicare Hospitalist in Portland, ME

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Dr Cashel O'brien, DO is a medicare enrolled "Hospitalist" physician in Portland, Maine. Her current practice location is 22 Bramhall St, Portland, Maine. You can reach out to her office (for appointments etc.) via phone at (207) 662-0111.

Dr Cashel O'brien is licensed to practice in Maine (license number DO3386) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1093275612.

Contact Information

Dr Cashel O'brien, DO
22 Bramhall St,
Portland, ME 04102-3175
(207) 662-0111
Not Available

Map and Direction




Physician's Profile

Full NameDr Cashel O'brien
GenderFemale
SpecialityHospitalist
Location22 Bramhall St, Portland, Maine
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1093275612
  • Provider Enumeration Date: 03/20/2019
  • Last Update Date: 09/20/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 9830427061
  • Enrollment ID: I20221128001349

Medical Identifiers

Medical identifiers for Dr Cashel O'brien such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1093275612NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RA0000XInternal Medicine - Adolescent Medicine DO3386 (Maine)Secondary
208M00000XHospitalist DO3386 (Maine)Primary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Cashel O'brien allows following entities to bill medicare on her behalf.
Entity NameMaine Medical Partners
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1467477349
PECOS PAC ID: 9335043967
Enrollment ID: O20031125000026
Entity NameMainehealth
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1790265502
PECOS PAC ID: 7517860588
Enrollment ID: O20040701000166
Entity NameMaine Medical Partners
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1073527388
PECOS PAC ID: 9335043967
Enrollment ID: O20050401000844

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Cashel O'brien is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Cashel O'brien, DO
22 Bramhall St,
Portland, ME 04102-3175

Ph: () -		Dr Cashel O'brien, DO
22 Bramhall St,
Portland, ME 04102-3175

Ph: (207) 662-0111

Reviews and Comments


Hospitalist Doctors in Portland, ME

Karin M Doehne, MD
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 211 Marginal Way, Portland, ME 04101
Phone: 207-544-9355    
Elizabeth Clare Cummings, MD
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 22 Bramhall St, Portland, ME 04102
Phone: 207-662-0111    
Dr. Catherine Freeman, DO
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Medicare: Medicare Enrolled
Practice Location: 22 Bramhall St, Portland, ME 04102
Phone: 207-662-4618    
Lisa Almeder, MD
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Medicare: Accepting Medicare Assignments
Practice Location: 22 Bramhall St, Pavilion 1203, Portland, ME 04102
Phone: 207-662-4618    Fax: 207-662-6254
Dr. Mojabeng Phoofolo, M.D.
Hospitalist
Medicare: Accepting Medicare Assignments
Practice Location: 22 Bramhall St, Portland, ME 04102
Phone: 336-407-2998    
Mary C. Ottolini, MD
Hospitalist
Medicare: Medicare Enrolled
Practice Location: 22 Bramhall St, Portland, ME 04102
Phone: 207-662-6711    Fax: 207-662-6063
Dr. Lauren Nicole Boehm, MD
Hospitalist
Medicare: Medicare Enrolled
Practice Location: 22 Bramhall St, Portland, ME 04102
Phone: 207-662-0111    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.